Kourtney Kardashian & Scott Disick Split—These Photos Are What Made Her Call Their Relationship Quits

And another big celebrity breakup announcement just hit the fan this summer.

While most people were out celebrating, Scott Disick and Kourtney Kardashian broke up during the holiday weekend. The Keeping Up With The Kardashians reality star is known for always sticking close to Disick’s side, despite his partying and cheating rumors, but she’s over the whole scene, especially since she’s the one who has been taking care of their three little ones—son Mason, 5, daughter Penelope (turning 3 on Wednesday), and their 6-month-old newborn Reign.

“She’s done with him for good. She is not taking him back this time,” an insider tells OK!.

Reports say that once Kourtney, 36, saw the photos of Scott, 32, with his arm around a Los Angeles stylist Chloe Bartoli in Monte Carlo (not a friend of the Kardashian fam), Kourtney was ready to call it quits with Lord Disick. What’s more, Scott allegedly hasn’t even come back home in nearly a month from his nonstop partying.

Star reported recently that Kourtney was devastated when she discovered Scott allegedly cheating, which was all caught on camera. “He was completely out of control, doing cocaine and taking Quaaludes,” a source reports, which resulted in Scott jumping in bed with “a hot young 21-year-old girl” at the Trump SoHo in downtown Manhattan. This was all happening while Kourtney sat at home with their three kids.

Photo credit: AKM-GSI

“She heard that Scott told [the girl] that he loved her,” a friend told OK! about the 21-year-old at Trump SoHo. “Kourtney can take a lot, but to have your man tell another woman he loves her is the ultimate betrayal.”

The two reality stars started dating in 2006, but it’s been a strained relationship, and despite Scott’s party animal instinct over the years, she hasn’t stopped procreating with him. But romance in their relationship has been fading over time. An insider told OK! that one of the reasons Scott was so shocked about Kourtney’s pregnancies is that, for years, they’ve been intimate only sporadically. (It’s no secret they’ve long slept in separate bedrooms.) “They barely have sex, and on the very rare occasions they do, she gets pregnant,” the insider says.

Photo credit: AKM-GSI

While Scott has been spiraling out of control for some time, between his in-and-out stays of rehab and nonstop partying with other women, Scott continues to act carelessly and not mind what he’s doing in public.

“It’s like he’s come completely undone,” says another insider. “The only way he knows how to handle difficult situations is by boozing. He is a mess.”